Ctenacodon

Ctenacodon is an extinct North American mammal that lived during the Upper Jurassic period. It's a member of the family Allodontidae within the order Multituberculata. Ctenacodon was named by Othniel Marsh[?] in 1879. At least four species are currently recognized.

Genus: Ctenacodon Marsh OC, 1879
'comb tooth'
Aka: Allodon Marsh, 1881

Species: Ctenacodon laticeps (Marsh OC, 1881) Simpson GG, 1927
Aka: Allodon laticeps Marsh OC, 1881
Place: Morrison Formation[?], Wyoming
Country: USA
Age: Upper Jurassic
Remarks: The holotype, collected by Reed WH in 1880, is in the Peabody Mueum[?], Yale. Judging by the photo I've just acquired, the jaw is at least partially known, (Plate 1, Kielan-Jaworowska & Hurum, 2001).
References: Simpson (1927), Mesozoic Mammalia. VII. Taxonomy of Morrison multituberculates. Am. J. Sci. (5) xiv, p.36-38.
Marsh (1881), New Jurassic mammals. Am. J. Sci. (3) xxi: p.511-513.

Species: Ctenacodon nanus Marsh OC, 1881
Place: Morrison Formation, Wyoming
Country: USA
Age: Upper Jurassic
Remarks: This type fossil is likewise at Yale.

Species: Ctenacodon serratus Marsh OC, 1879
Place: Morrison Formation, Wyoming
Country: USA
Age: Upper Jurassic
Remarks: Yale.
Reference: Marsh (1879), Notice of new Jurassic mammals. Amer. J. of Sci., 3pp., xviii, p.296-398.

Extra remarks: "Ctenacodon" brentbaatar is to be assigned to a separate genus, whilst the significance of Ctenacodon falconeri, (should it have any), is a mystery to me.

Page references: Kielan-Jaworowska Z & Hurum JH (2001), Phylogeny and Systematics of multituberculate mammals. Paleontology 44, p.389-429.

(This information has been derived from [1] (http://home.arcor.de/ktdykes/plagiau.htm) MESOZOIC MAMMALS; Basal Multituberculata, an internet directory. As that's my webpage, there are no issues of copyright. Trevor Dykes)